1. Volume 76, Issue 5, Pages 1010-1020 (December 2012)
Electrophysiological Low-Frequency Coherence and Cross-Frequency Coupling Contribute to BOLD Connectivity 
Liang Wang, Yuri B. Saalmann, Mark A. Pinsk, Michael J. Arcaro, Sabine Kastner 
Neuron 
Volume 76, Issue 5, Pages (December 2012)
DOI: /j.neuron
Copyright © 2012 Elsevier Inc. Terms and Conditions

2. Figure 1
Robust Resting-State fMRI Functional Connectivity across a Visual Thalamo-Cortical Network
Correlation map showing the connectivity of a right V4 seed with the rest of the brain of monkey BS. V4 was significantly connected with the LIP, TEO, and pulvinar, among other regions. ROI boundaries are color coded (red, LIP; blue, V4; green, TEO; cyan, pulvinar). See also Figure S1.
Neuron  , DOI: ( /j.neuron )
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3. Figure 2 fMRI Functional Connectivity between Pulvino-Cortical ROIs
There were significant correlations between all ROIs during epochs without eye movements. Bars show mean functional connectivity ± SEM. See also Figure S2.
Neuron  , DOI: ( /j.neuron )
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4. Figure 3
Slow Fluctuations in the Power of Low Frequencies, but Not Gamma, Contributed Most to Functional Connectivity
There were significantly higher correlations in slow waves of alpha power between ROIs compared with slow waves of theta, beta, and gamma power (p < 0.001). We found the lowest correlations for gamma power. Bars show mean functional connectivity ± SEM. The mean connectivity of ROI pairs across frequency bands fits a Gaussian function, ffitted(x)=0.54×e(−1)×((x−1.92)/2.51)2, with a peak at the alpha band (R2 = 0.989). See also Figure S3.
Neuron  , DOI: ( /j.neuron )
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5. Figure 4
Fast-Wave Coherence at Low Frequencies Best Predicts BOLD Connectivity
The population mean LFP-LFP coherence (± SEM) was calculated for all ROI pairs during stable-eye epochs of 500 ms duration. The peak coherence occurred at low frequencies <20 Hz.
Neuron  , DOI: ( /j.neuron )
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6. Figure 5
Cross-Frequency Coupling between Neural Oscillations in the Alpha and Gamma Frequency Bands
Left column: normalized SI between the alpha frequency band (8–13 Hz) and higher frequencies across each of the 58 sessions, for the pulvinar, TEO, LIP, and V4. The color bar (bottom) shows the SI range. The SI was highly consistent across sessions for each ROI. Right column: the population average SI (± SEM) shows high coupling between the alpha and gamma frequency bands (predominantly 40–80 Hz) for all four ROIs. See also Figure S4.
Neuron  , DOI: ( /j.neuron )
Copyright © 2012 Elsevier Inc. Terms and Conditions